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Concrete exterior wall hanging board and new type of prefabricated house

Publisher:Homso   Release time:2019-6-20 14:08:07

The main components that make up the prefabricated house system

First, the external wall system. The exterior wall system of the prefabricated house is composed of concrete outer wall hanging plate, concrete hanging column, inner wall plate and hollow sandwich filling and insulating material. The external wall of the assembled assembly can prevent the ultraviolet radiation in the hot summer region and the freezing damage in the cold and freezing area, and the wall has the deformation stress caused by the thermal expansion and contraction, the wet expansion and contraction, and the wall body is avoided. Deterioration and cracking.

(1) Concrete exterior wall hanging board. The concrete siding is a non-rectangular wall panel with 10 exterior faces. The thickness of the concrete siding is 40 mm, and its length and width are in accordance with the requirement that the building modulus can be divisible by 3, the width is 180 mm, and the length is 1200 mm. The installation method of the concrete outer wall hanging board is defined as "dry hanging", and the concrete outer wall hanging board is designed with a continuous state hanging card. In order to be waterproof, the concrete siding panels are designed to overlap each other.

(2) Concrete exterior wall hanging column. In order to match the "dry hanging" of the concrete wall hanging board, the concrete hanging column is designed with a hanging groove.

(3) Inner wall panel. The inner wall panel of the prefabricated house has a wide range of choices, such as silicon-magnesium aerated hollow strip, calcium silicate cement pressure plate polystyrene particle composite board, and GRC hollow strip. On the outer wall of the outer wall, there are concrete hanging columns, concrete outer wall hanging plates and the same wall with windows. The inner wall is equipped with silicon-magnesium aerated hollow lightweight partition board and calcium silicate cement pressure plate polystyrene particle composite board. Industrial waste ash partition board.

In China, there are many types of partition boards, which can be used on the inner wall of the outer wall.

Second, roofing and floor panel materials. The roof panel and the floor panel are made of a lightweight, high-strength, high-capacity, heat-insulating, sound-insulating and fire-resistant sheet produced by GRC combined with a foamed polystyrene board or extruded board of 20 kg/m2.

In summary, with fabricated roof slabs, floor slabs, and prefabricated concrete siding slabs, with fabricated partition siding, we can build prefabricated houses.

Prefabricated house construction method

First, the construction drawing design. The construction drawing design is the foundation of building a house. Everything is done from points, lines and faces.

Second, the construction drawing design of the building structure. The construction structure design of the building structure includes the building structure, the building beam, the joint connection, the roof truss and the foundation embedded parts, the roof rafter, the stairway processing and installation, and the concrete hanging column layout.

After the construction drawing is completed, the material of the column and the material of the beam can be calculated and selected according to the weight of the building and the span of the building room, and the basis of the design based on the endurance. The foundation of a concrete siding-mounted house is usually a point foundation and a ground beam structure. After completing the basic drawing of the building, the foundation material can be prepared according to the basic drawing, the pile is laid, the foundation pit is dug, the steel column gusset is installed, the concrete foundation and the concrete ground beam are poured, and the number of the structural columns of the house can also be known.

After the structural drawing of the building beam is completed, the height of each structural column can be calculated according to the elevation position of the beam and the arrangement of the beam, and the dimensions of each beam, the processing column, the mounting column and the beam are calculated.

The node connection is the connection of the column to the foundation, the connection of the column to the beam, and the connection of the beam to the beam. Node connections can be made in accordance with steel design specifications. The connections of the nodes are usually bolted or socketed and directly welded.

Concrete exterior wall hanging board assembly house construction

After completing the construction drawing and the construction drawing of the building structure, the concrete siding-mounted building can be prepared for construction.

(1) Foundation construction. According to the basic construction drawing, set the pile, release the line, and draw the line, and then start the foundation construction. Small houses can usually be used to manually dig foundation pits, and large houses usually use excavators.

(2) Structural installation. The order of structural installation is point foundation, ground beam → column → beam → 柁 → 檩. The point foundation of the concrete siding-mounted building is composed of basic ribs, anchoring steel bars, steel floor burying plates and C30 concrete. The steel structural column is composed of square steel pipe or H steel. The surface of the steel structural material is first painted with the brand's red anti-rust paint primer, and then the brand's alkyd or epoxy anti-rust topcoat is applied.

(3) Install the hanging column. The installation steps of the concrete hanging column are divided into several parts: the elastic line, the installation of the U-shaped card, the installation of the hanging column, and the fixing of the hanging column. Usually, according to the design width of the door, the position of the hanging column on both sides of the door is determined, and the other hanging columns are arranged on both sides at a column distance of 600 mm.
 
(4) Install the concrete hanging plate. The concrete outer wall hanging plate with the hanging card is stuck in the hanging groove of the concrete hanging column. This method does not need bolt connection or screw fixing, and the installation is quick and easy. The new composite exterior wall of concrete siding has the following six advantages:

First, the deformation stress of the concrete material due to "wet up and shrinkage" is completely eliminated, so that the outer wall does not crack;

Second, the materials are used less and can consume industrial solid waste;

Third, the product is not “heavy” and not “stupid”, and the transportation is convenient;

Fourth, the construction is more convenient, and the bonding and anchoring materials of the fixed wall are subtracted;

Fifth, the product meets the modulus, making it easier to assemble the house;

Sixth, the products are economical, making it less difficult to promote and apply.

(5) Install the roof panel (capped). After installing the concrete hanging column, the concrete outer wall hanging board and the installation roof panel can be installed simultaneously. The roof panel is a lightweight panel with a weight of ≤40 kg per square meter and a bearing capacity of ≥20 MPa per square meter.

(6) A variety of materials and construction of the inner wall of concrete siding. The inner wall of concrete exterior wall can be divided into different materials according to the classification of regional climate and the requirements of thermal insulation in China. It can be divided into thermal insulation material + lightweight partition board, thermal insulation material + calcium silicate board + plasterboard, insulation material. +GRC insulation board, insulation material + autoclaved aerated concrete, insulation material + foamed concrete.

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